Home / 6,620.89-9,931.33-1,690.35

Finding the Fourth Proportional to 6,620.89, 9,931.33 and 1,690.35

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Solution

The fourth proportional to 6,620.89, 9,931.33 and 1,690.35 is: 2,535.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.89 : 9,931.33 = 1,690.35 : x
  2. Step 2: Convert to fraction form
    6,620.89/9,931.33 = 1,690.35/x
  3. Step 3: Cross multiply
    6,620.89x = 9,931.33 × 1,690.35
  4. Step 4: Simplify right side
    6,620.89x = 16,787,423.67
  5. Step 5: Solve for x
    x = 16,787,423.67/6,620.89
  6. Step 6: Final answer
    x = 2,535.52

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.